right now it appears that the use of ground forces is pretty much out of the question because it would take a massive invasion to try to control those chemical weapon sites. now air strikes are a possibility but, chuck, if you strike those chemical weapon sites -- >> you don't want to put that in the air. >> reporter: that, too, could spread the deadly chemicals. the most viable option right now may, in fact, be direct air strikes against the assad regime targets themselves perhaps even president assad. >> all right. i want to quickly ask about this iranian claim that they captured a small u.s. drone, u.s. navy, i know, has already said all unmanned air vehicles have been accounted for that are operating in the middle east region. are you hearing anything different? what could iran think it has that it doesn't or is it another country's drone? >> reporter: if you look at iran's video, it is a scan eagle drone which, quite frankly, sort of like honda civics. everybody has one. you can buy them pretty much on the open market. the belief is that they got it from the persian gulf state, un